1 // SPDX-License-Identifier: GPL-2.0
3 * Texas Instruments Ethernet Switch Driver
5 * Copyright (C) 2019 Texas Instruments
10 #include <linux/timer.h>
11 #include <linux/module.h>
12 #include <linux/irqreturn.h>
13 #include <linux/interrupt.h>
14 #include <linux/if_ether.h>
15 #include <linux/etherdevice.h>
16 #include <linux/net_tstamp.h>
17 #include <linux/phy.h>
18 #include <linux/phy/phy.h>
19 #include <linux/delay.h>
20 #include <linux/pinctrl/consumer.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/gpio/consumer.h>
24 #include <linux/of_mdio.h>
25 #include <linux/of_net.h>
26 #include <linux/of_device.h>
27 #include <linux/if_vlan.h>
28 #include <linux/kmemleak.h>
29 #include <linux/sys_soc.h>
31 #include <net/page_pool.h>
32 #include <net/pkt_cls.h>
33 #include <net/devlink.h>
37 #include "cpsw_priv.h"
39 #include "cpsw_switchdev.h"
41 #include "davinci_cpdma.h"
43 #include <net/pkt_sched.h>
45 static int debug_level;
46 static int ale_ageout = CPSW_ALE_AGEOUT_DEFAULT;
47 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
48 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
51 struct cpsw_common *cpsw;
54 enum cpsw_devlink_param_id {
55 CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
56 CPSW_DL_PARAM_SWITCH_MODE,
57 CPSW_DL_PARAM_ALE_BYPASS,
60 /* struct cpsw_common is not needed, kept here for compatibility
61 * reasons witrh the old driver
63 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
64 struct cpsw_priv *priv)
66 if (priv->emac_port == HOST_PORT_NUM)
69 return priv->emac_port - 1;
72 static bool cpsw_is_switch_en(struct cpsw_common *cpsw)
74 return !cpsw->data.dual_emac;
77 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
79 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
80 bool enable_uni = false;
83 if (cpsw_is_switch_en(cpsw))
86 /* Enabling promiscuous mode for one interface will be
87 * common for both the interface as the interface shares
88 * the same hardware resource.
90 for (i = 0; i < cpsw->data.slaves; i++)
91 if (cpsw->slaves[i].ndev &&
92 (cpsw->slaves[i].ndev->flags & IFF_PROMISC))
95 if (!enable && enable_uni) {
97 dev_dbg(cpsw->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
101 /* Enable unknown unicast, reg/unreg mcast */
102 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
103 ALE_P0_UNI_FLOOD, 1);
105 dev_dbg(cpsw->dev, "promiscuity enabled\n");
107 /* Disable unknown unicast */
108 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
109 ALE_P0_UNI_FLOOD, 0);
110 dev_dbg(cpsw->dev, "promiscuity disabled\n");
115 * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
116 * if it's not deleted
117 * @ndev: device to sync
118 * @addr: address to be added or deleted
119 * @vid: vlan id, if vid < 0 set/unset address for real device
120 * @add: add address if the flag is set or remove otherwise
122 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
125 struct cpsw_priv *priv = netdev_priv(ndev);
126 struct cpsw_common *cpsw = priv->cpsw;
127 int mask, flags, ret, slave_no;
129 slave_no = cpsw_slave_index(cpsw, priv);
131 vid = cpsw->slaves[slave_no].port_vlan;
133 mask = ALE_PORT_HOST;
134 flags = vid ? ALE_VLAN : 0;
137 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
139 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
144 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
146 struct addr_sync_ctx *sync_ctx = ctx;
147 struct netdev_hw_addr *ha;
148 int found = 0, ret = 0;
150 if (!vdev || !(vdev->flags & IFF_UP))
153 /* vlan address is relevant if its sync_cnt != 0 */
154 netdev_for_each_mc_addr(ha, vdev) {
155 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
156 found = ha->sync_cnt;
162 sync_ctx->consumed++;
164 if (sync_ctx->flush) {
166 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
171 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
176 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
178 struct addr_sync_ctx sync_ctx;
181 sync_ctx.consumed = 0;
182 sync_ctx.addr = addr;
183 sync_ctx.ndev = ndev;
186 ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
187 if (sync_ctx.consumed < num && !ret)
188 ret = cpsw_set_mc(ndev, addr, -1, 1);
193 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
195 struct addr_sync_ctx sync_ctx;
197 sync_ctx.consumed = 0;
198 sync_ctx.addr = addr;
199 sync_ctx.ndev = ndev;
202 vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
203 if (sync_ctx.consumed == num)
204 cpsw_set_mc(ndev, addr, -1, 0);
209 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
211 struct addr_sync_ctx *sync_ctx = ctx;
212 struct netdev_hw_addr *ha;
215 if (!vdev || !(vdev->flags & IFF_UP))
218 /* vlan address is relevant if its sync_cnt != 0 */
219 netdev_for_each_mc_addr(ha, vdev) {
220 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
221 found = ha->sync_cnt;
229 sync_ctx->consumed++;
230 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
234 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
236 struct addr_sync_ctx sync_ctx;
238 sync_ctx.addr = addr;
239 sync_ctx.ndev = ndev;
240 sync_ctx.consumed = 0;
242 vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
243 if (sync_ctx.consumed < num)
244 cpsw_set_mc(ndev, addr, -1, 0);
249 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
251 struct cpsw_priv *priv = netdev_priv(ndev);
252 struct cpsw_common *cpsw = priv->cpsw;
254 if (ndev->flags & IFF_PROMISC) {
255 /* Enable promiscuous mode */
256 cpsw_set_promiscious(ndev, true);
257 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, priv->emac_port);
261 /* Disable promiscuous mode */
262 cpsw_set_promiscious(ndev, false);
264 /* Restore allmulti on vlans if necessary */
265 cpsw_ale_set_allmulti(cpsw->ale,
266 ndev->flags & IFF_ALLMULTI, priv->emac_port);
268 /* add/remove mcast address either for real netdev or for vlan */
269 __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
273 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
275 len += CPSW_HEADROOM;
276 len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
278 return SKB_DATA_ALIGN(len);
281 static void cpsw_rx_handler(void *token, int len, int status)
283 struct page *new_page, *page = token;
284 void *pa = page_address(page);
285 int headroom = CPSW_HEADROOM;
286 struct cpsw_meta_xdp *xmeta;
287 struct cpsw_common *cpsw;
288 struct net_device *ndev;
289 int port, ch, pkt_size;
290 struct cpsw_priv *priv;
291 struct page_pool *pool;
297 xmeta = pa + CPSW_XMETA_OFFSET;
298 cpsw = ndev_to_cpsw(xmeta->ndev);
300 pkt_size = cpsw->rx_packet_max;
304 port = CPDMA_RX_SOURCE_PORT(status);
306 ndev = cpsw->slaves[--port].ndev;
309 priv = netdev_priv(ndev);
310 pool = cpsw->page_pool[ch];
312 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
313 /* In dual emac mode check for all interfaces */
314 if (cpsw->usage_count && status >= 0) {
315 /* The packet received is for the interface which
316 * is already down and the other interface is up
317 * and running, instead of freeing which results
318 * in reducing of the number of rx descriptor in
319 * DMA engine, requeue page back to cpdma.
325 /* the interface is going down, pages are purged */
326 page_pool_recycle_direct(pool, page);
330 new_page = page_pool_dev_alloc_pages(pool);
331 if (unlikely(!new_page)) {
333 ndev->stats.rx_dropped++;
337 if (priv->xdp_prog) {
338 if (status & CPDMA_RX_VLAN_ENCAP) {
339 xdp.data = pa + CPSW_HEADROOM +
340 CPSW_RX_VLAN_ENCAP_HDR_SIZE;
341 xdp.data_end = xdp.data + len -
342 CPSW_RX_VLAN_ENCAP_HDR_SIZE;
344 xdp.data = pa + CPSW_HEADROOM;
345 xdp.data_end = xdp.data + len;
348 xdp_set_data_meta_invalid(&xdp);
350 xdp.data_hard_start = pa;
351 xdp.rxq = &priv->xdp_rxq[ch];
352 xdp.frame_sz = PAGE_SIZE;
354 ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port);
355 if (ret != CPSW_XDP_PASS)
358 /* XDP prog might have changed packet data and boundaries */
359 len = xdp.data_end - xdp.data;
360 headroom = xdp.data - xdp.data_hard_start;
362 /* XDP prog can modify vlan tag, so can't use encap header */
363 status &= ~CPDMA_RX_VLAN_ENCAP;
366 /* pass skb to netstack if no XDP prog or returned XDP_PASS */
367 skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
369 ndev->stats.rx_dropped++;
370 page_pool_recycle_direct(pool, page);
374 skb->offload_fwd_mark = priv->offload_fwd_mark;
375 skb_reserve(skb, headroom);
378 if (status & CPDMA_RX_VLAN_ENCAP)
379 cpsw_rx_vlan_encap(skb);
380 if (priv->rx_ts_enabled)
381 cpts_rx_timestamp(cpsw->cpts, skb);
382 skb->protocol = eth_type_trans(skb, ndev);
384 /* unmap page as no netstack skb page recycling */
385 page_pool_release_page(pool, page);
386 netif_receive_skb(skb);
388 ndev->stats.rx_bytes += len;
389 ndev->stats.rx_packets++;
392 xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
396 dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
397 ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
400 WARN_ON(ret == -ENOMEM);
401 page_pool_recycle_direct(pool, new_page);
405 static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
408 struct cpsw_common *cpsw = priv->cpsw;
409 int unreg_mcast_mask = 0;
414 port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
416 mcast_mask = ALE_PORT_HOST;
417 if (priv->ndev->flags & IFF_ALLMULTI)
418 unreg_mcast_mask = mcast_mask;
420 ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
425 ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
426 HOST_PORT_NUM, ALE_VLAN, vid);
430 ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
431 mcast_mask, ALE_VLAN, vid, 0);
433 goto clean_vlan_ucast;
437 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
438 HOST_PORT_NUM, ALE_VLAN, vid);
440 cpsw_ale_del_vlan(cpsw->ale, vid, 0);
444 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
445 __be16 proto, u16 vid)
447 struct cpsw_priv *priv = netdev_priv(ndev);
448 struct cpsw_common *cpsw = priv->cpsw;
451 if (cpsw_is_switch_en(cpsw)) {
452 dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
456 if (vid == cpsw->data.default_vlan)
459 ret = pm_runtime_get_sync(cpsw->dev);
461 pm_runtime_put_noidle(cpsw->dev);
465 /* In dual EMAC, reserved VLAN id should not be used for
466 * creating VLAN interfaces as this can break the dual
467 * EMAC port separation
469 for (i = 0; i < cpsw->data.slaves; i++) {
470 if (cpsw->slaves[i].ndev &&
471 vid == cpsw->slaves[i].port_vlan) {
477 dev_dbg(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
478 ret = cpsw_add_vlan_ale_entry(priv, vid);
480 pm_runtime_put(cpsw->dev);
484 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
486 struct cpsw_priv *priv = arg;
491 cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
495 /* restore resources after port reset */
496 static void cpsw_restore(struct cpsw_priv *priv)
498 struct cpsw_common *cpsw = priv->cpsw;
500 /* restore vlan configurations */
501 vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
503 /* restore MQPRIO offload */
504 cpsw_mqprio_resume(&cpsw->slaves[priv->emac_port - 1], priv);
506 /* restore CBS offload */
507 cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
510 static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
512 char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
514 cpsw_ale_add_mcast(cpsw->ale, stpa,
515 ALE_PORT_HOST, ALE_SUPER, 0,
516 ALE_MCAST_BLOCK_LEARN_FWD);
519 static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
521 int vlan = cpsw->data.default_vlan;
523 writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
525 writel(vlan, &cpsw->host_port_regs->port_vlan);
527 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
528 ALE_ALL_PORTS, ALE_ALL_PORTS,
529 ALE_PORT_1 | ALE_PORT_2);
531 cpsw_init_stp_ale_entry(cpsw);
533 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
534 dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
535 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
538 static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
540 int vlan = cpsw->data.default_vlan;
542 writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
544 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
545 dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
547 writel(vlan, &cpsw->host_port_regs->port_vlan);
549 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
550 /* learning make no sense in dual_mac mode */
551 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
554 static void cpsw_init_host_port(struct cpsw_priv *priv)
556 struct cpsw_common *cpsw = priv->cpsw;
559 /* soft reset the controller and initialize ale */
560 soft_reset("cpsw", &cpsw->regs->soft_reset);
561 cpsw_ale_start(cpsw->ale);
563 /* switch to vlan unaware mode */
564 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
565 CPSW_ALE_VLAN_AWARE);
566 control_reg = readl(&cpsw->regs->control);
567 control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
568 writel(control_reg, &cpsw->regs->control);
570 /* setup host port priority mapping */
571 writel_relaxed(CPDMA_TX_PRIORITY_MAP,
572 &cpsw->host_port_regs->cpdma_tx_pri_map);
573 writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
575 /* disable priority elevation */
576 writel_relaxed(0, &cpsw->regs->ptype);
578 /* enable statistics collection only on all ports */
579 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
581 /* Enable internal fifo flow control */
582 writel(0x7, &cpsw->regs->flow_control);
584 if (cpsw_is_switch_en(cpsw))
585 cpsw_init_host_port_switch(cpsw);
587 cpsw_init_host_port_dual_mac(cpsw);
589 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
590 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
593 static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
594 struct cpsw_slave *slave)
596 u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
597 struct cpsw_common *cpsw = priv->cpsw;
600 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
602 slave_write(slave, slave->port_vlan, reg);
604 cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
605 port_mask, port_mask, 0);
606 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
607 ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
609 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
610 HOST_PORT_NUM, ALE_VLAN |
611 ALE_SECURE, slave->port_vlan);
612 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
613 ALE_PORT_DROP_UNKNOWN_VLAN, 1);
614 /* learning make no sense in dual_mac mode */
615 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
616 ALE_PORT_NOLEARN, 1);
619 static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
620 struct cpsw_slave *slave)
622 u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
623 struct cpsw_common *cpsw = priv->cpsw;
626 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
627 ALE_PORT_DROP_UNKNOWN_VLAN, 0);
628 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
629 ALE_PORT_NOLEARN, 0);
630 /* disabling SA_UPDATE required to make stp work, without this setting
631 * Host MAC addresses will jump between ports.
632 * As per TRM MAC address can be defined as unicast supervisory (super)
633 * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
634 * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
635 * causes STP packets to be dropped due to ingress filter
636 * if (source address found) and (secure) and
637 * (receive port number != port_number))
638 * then discard the packet
640 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
641 ALE_PORT_NO_SA_UPDATE, 1);
643 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
644 port_mask, ALE_VLAN, slave->port_vlan,
646 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
647 HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
649 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
651 slave_write(slave, slave->port_vlan, reg);
654 static void cpsw_adjust_link(struct net_device *ndev)
656 struct cpsw_priv *priv = netdev_priv(ndev);
657 struct cpsw_common *cpsw = priv->cpsw;
658 struct cpsw_slave *slave;
659 struct phy_device *phy;
662 slave = &cpsw->slaves[priv->emac_port - 1];
669 mac_control = CPSW_SL_CTL_GMII_EN;
671 if (phy->speed == 1000)
672 mac_control |= CPSW_SL_CTL_GIG;
674 mac_control |= CPSW_SL_CTL_FULLDUPLEX;
676 /* set speed_in input in case RMII mode is used in 100Mbps */
677 if (phy->speed == 100)
678 mac_control |= CPSW_SL_CTL_IFCTL_A;
679 /* in band mode only works in 10Mbps RGMII mode */
680 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
681 mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
684 mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
687 mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
689 if (mac_control != slave->mac_control)
690 cpsw_sl_ctl_set(slave->mac_sl, mac_control);
692 /* enable forwarding */
693 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
694 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
696 netif_tx_wake_all_queues(ndev);
698 if (priv->shp_cfg_speed &&
699 priv->shp_cfg_speed != slave->phy->speed &&
700 !cpsw_shp_is_off(priv))
701 dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
703 netif_tx_stop_all_queues(ndev);
706 /* disable forwarding */
707 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
708 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
710 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
712 cpsw_sl_ctl_reset(slave->mac_sl);
715 if (mac_control != slave->mac_control)
716 phy_print_status(phy);
718 slave->mac_control = mac_control;
720 if (phy->link && cpsw_need_resplit(cpsw))
721 cpsw_split_res(cpsw);
724 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
726 struct cpsw_common *cpsw = priv->cpsw;
727 struct phy_device *phy;
729 cpsw_sl_reset(slave->mac_sl, 100);
730 cpsw_sl_ctl_reset(slave->mac_sl);
732 /* setup priority mapping */
733 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
734 RX_PRIORITY_MAPPING);
736 switch (cpsw->version) {
738 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
739 /* Increase RX FIFO size to 5 for supporting fullduplex
743 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
744 CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
749 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
750 /* Increase RX FIFO size to 5 for supporting fullduplex
754 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
755 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
759 /* setup max packet size, and mac address */
760 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
761 cpsw->rx_packet_max);
762 cpsw_set_slave_mac(slave, priv);
764 slave->mac_control = 0; /* no link yet */
766 if (cpsw_is_switch_en(cpsw))
767 cpsw_port_add_switch_def_ale_entries(priv, slave);
769 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
771 if (!slave->data->phy_node)
772 dev_err(priv->dev, "no phy found on slave %d\n",
774 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
775 &cpsw_adjust_link, 0, slave->data->phy_if);
777 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
778 slave->data->phy_node,
784 phy_attached_info(slave->phy);
786 phy_start(slave->phy);
788 /* Configure GMII_SEL register */
789 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
790 slave->data->phy_if);
793 static int cpsw_ndo_stop(struct net_device *ndev)
795 struct cpsw_priv *priv = netdev_priv(ndev);
796 struct cpsw_common *cpsw = priv->cpsw;
797 struct cpsw_slave *slave;
799 cpsw_info(priv, ifdown, "shutting down ndev\n");
800 slave = &cpsw->slaves[priv->emac_port - 1];
802 phy_stop(slave->phy);
804 netif_tx_stop_all_queues(priv->ndev);
807 phy_disconnect(slave->phy);
811 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
813 if (cpsw->usage_count <= 1) {
814 napi_disable(&cpsw->napi_rx);
815 napi_disable(&cpsw->napi_tx);
816 cpts_unregister(cpsw->cpts);
817 cpsw_intr_disable(cpsw);
818 cpdma_ctlr_stop(cpsw->dma);
819 cpsw_ale_stop(cpsw->ale);
820 cpsw_destroy_xdp_rxqs(cpsw);
823 if (cpsw_need_resplit(cpsw))
824 cpsw_split_res(cpsw);
827 pm_runtime_put_sync(cpsw->dev);
831 static int cpsw_ndo_open(struct net_device *ndev)
833 struct cpsw_priv *priv = netdev_priv(ndev);
834 struct cpsw_common *cpsw = priv->cpsw;
837 dev_info(priv->dev, "starting ndev. mode: %s\n",
838 cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
839 ret = pm_runtime_get_sync(cpsw->dev);
841 pm_runtime_put_noidle(cpsw->dev);
845 /* Notify the stack of the actual queue counts. */
846 ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
848 dev_err(priv->dev, "cannot set real number of tx queues\n");
852 ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
854 dev_err(priv->dev, "cannot set real number of rx queues\n");
858 /* Initialize host and slave ports */
859 if (!cpsw->usage_count)
860 cpsw_init_host_port(priv);
861 cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
863 /* initialize shared resources for every ndev */
864 if (!cpsw->usage_count) {
865 /* create rxqs for both infs in dual mac as they use same pool
866 * and must be destroyed together when no users.
868 ret = cpsw_create_xdp_rxqs(cpsw);
872 ret = cpsw_fill_rx_channels(priv);
876 if (cpts_register(cpsw->cpts))
877 dev_err(priv->dev, "error registering cpts device\n");
879 napi_enable(&cpsw->napi_rx);
880 napi_enable(&cpsw->napi_tx);
882 if (cpsw->tx_irq_disabled) {
883 cpsw->tx_irq_disabled = false;
884 enable_irq(cpsw->irqs_table[1]);
887 if (cpsw->rx_irq_disabled) {
888 cpsw->rx_irq_disabled = false;
889 enable_irq(cpsw->irqs_table[0]);
895 /* Enable Interrupt pacing if configured */
896 if (cpsw->coal_intvl != 0) {
897 struct ethtool_coalesce coal;
899 coal.rx_coalesce_usecs = cpsw->coal_intvl;
900 cpsw_set_coalesce(ndev, &coal);
903 cpdma_ctlr_start(cpsw->dma);
904 cpsw_intr_enable(cpsw);
913 pm_runtime_put_sync(cpsw->dev);
917 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
918 struct net_device *ndev)
920 struct cpsw_priv *priv = netdev_priv(ndev);
921 struct cpsw_common *cpsw = priv->cpsw;
922 struct cpts *cpts = cpsw->cpts;
923 struct netdev_queue *txq;
924 struct cpdma_chan *txch;
927 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
928 cpsw_err(priv, tx_err, "packet pad failed\n");
929 ndev->stats.tx_dropped++;
930 return NET_XMIT_DROP;
933 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
934 priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
935 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
937 q_idx = skb_get_queue_mapping(skb);
938 if (q_idx >= cpsw->tx_ch_num)
939 q_idx = q_idx % cpsw->tx_ch_num;
941 txch = cpsw->txv[q_idx].ch;
942 txq = netdev_get_tx_queue(ndev, q_idx);
943 skb_tx_timestamp(skb);
944 ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
946 if (unlikely(ret != 0)) {
947 cpsw_err(priv, tx_err, "desc submit failed\n");
951 /* If there is no more tx desc left free then we need to
952 * tell the kernel to stop sending us tx frames.
954 if (unlikely(!cpdma_check_free_tx_desc(txch))) {
955 netif_tx_stop_queue(txq);
957 /* Barrier, so that stop_queue visible to other cpus */
958 smp_mb__after_atomic();
960 if (cpdma_check_free_tx_desc(txch))
961 netif_tx_wake_queue(txq);
966 ndev->stats.tx_dropped++;
967 netif_tx_stop_queue(txq);
969 /* Barrier, so that stop_queue visible to other cpus */
970 smp_mb__after_atomic();
972 if (cpdma_check_free_tx_desc(txch))
973 netif_tx_wake_queue(txq);
975 return NETDEV_TX_BUSY;
978 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
980 struct sockaddr *addr = (struct sockaddr *)p;
981 struct cpsw_priv *priv = netdev_priv(ndev);
982 struct cpsw_common *cpsw = priv->cpsw;
987 slave_no = cpsw_slave_index(cpsw, priv);
988 if (!is_valid_ether_addr(addr->sa_data))
989 return -EADDRNOTAVAIL;
991 ret = pm_runtime_get_sync(cpsw->dev);
993 pm_runtime_put_noidle(cpsw->dev);
997 vid = cpsw->slaves[slave_no].port_vlan;
998 flags = ALE_VLAN | ALE_SECURE;
1000 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
1002 cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
1005 ether_addr_copy(priv->mac_addr, addr->sa_data);
1006 ether_addr_copy(ndev->dev_addr, priv->mac_addr);
1007 cpsw_set_slave_mac(&cpsw->slaves[slave_no], priv);
1009 pm_runtime_put(cpsw->dev);
1014 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1015 __be16 proto, u16 vid)
1017 struct cpsw_priv *priv = netdev_priv(ndev);
1018 struct cpsw_common *cpsw = priv->cpsw;
1022 if (cpsw_is_switch_en(cpsw)) {
1023 dev_dbg(cpsw->dev, "ndo del vlan is called in switch mode\n");
1027 if (vid == cpsw->data.default_vlan)
1030 ret = pm_runtime_get_sync(cpsw->dev);
1032 pm_runtime_put_noidle(cpsw->dev);
1036 /* reset the return code as pm_runtime_get_sync() can return
1037 * non zero values as well.
1040 for (i = 0; i < cpsw->data.slaves; i++) {
1041 if (cpsw->slaves[i].ndev &&
1042 vid == cpsw->slaves[i].port_vlan) {
1048 dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1049 ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1051 dev_err(priv->dev, "cpsw_ale_del_vlan() failed: ret %d\n", ret);
1052 ret = cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1053 HOST_PORT_NUM, ALE_VLAN, vid);
1055 dev_err(priv->dev, "cpsw_ale_del_ucast() failed: ret %d\n",
1057 ret = cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1060 dev_err(priv->dev, "cpsw_ale_del_mcast failed. ret %d\n",
1062 cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1065 pm_runtime_put(cpsw->dev);
1069 static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
1072 struct cpsw_priv *priv = netdev_priv(ndev);
1075 err = snprintf(name, len, "p%d", priv->emac_port);
1083 #ifdef CONFIG_NET_POLL_CONTROLLER
1084 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1086 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1088 cpsw_intr_disable(cpsw);
1089 cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1090 cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1091 cpsw_intr_enable(cpsw);
1095 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1096 struct xdp_frame **frames, u32 flags)
1098 struct cpsw_priv *priv = netdev_priv(ndev);
1099 struct xdp_frame *xdpf;
1102 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1105 for (i = 0; i < n; i++) {
1107 if (xdpf->len < CPSW_MIN_PACKET_SIZE) {
1108 xdp_return_frame_rx_napi(xdpf);
1113 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
1120 static int cpsw_get_port_parent_id(struct net_device *ndev,
1121 struct netdev_phys_item_id *ppid)
1123 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1125 ppid->id_len = sizeof(cpsw->base_mac);
1126 memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
1131 static const struct net_device_ops cpsw_netdev_ops = {
1132 .ndo_open = cpsw_ndo_open,
1133 .ndo_stop = cpsw_ndo_stop,
1134 .ndo_start_xmit = cpsw_ndo_start_xmit,
1135 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1136 .ndo_do_ioctl = cpsw_ndo_ioctl,
1137 .ndo_validate_addr = eth_validate_addr,
1138 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1139 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1140 .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1141 #ifdef CONFIG_NET_POLL_CONTROLLER
1142 .ndo_poll_controller = cpsw_ndo_poll_controller,
1144 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1145 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1146 .ndo_setup_tc = cpsw_ndo_setup_tc,
1147 .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
1148 .ndo_bpf = cpsw_ndo_bpf,
1149 .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
1150 .ndo_get_port_parent_id = cpsw_get_port_parent_id,
1153 static void cpsw_get_drvinfo(struct net_device *ndev,
1154 struct ethtool_drvinfo *info)
1156 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1157 struct platform_device *pdev;
1159 pdev = to_platform_device(cpsw->dev);
1160 strlcpy(info->driver, "cpsw-switch", sizeof(info->driver));
1161 strlcpy(info->version, "2.0", sizeof(info->version));
1162 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1165 static int cpsw_set_pauseparam(struct net_device *ndev,
1166 struct ethtool_pauseparam *pause)
1168 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1169 struct cpsw_priv *priv = netdev_priv(ndev);
1172 slave_no = cpsw_slave_index(cpsw, priv);
1173 if (!cpsw->slaves[slave_no].phy)
1176 if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
1179 priv->rx_pause = pause->rx_pause ? true : false;
1180 priv->tx_pause = pause->tx_pause ? true : false;
1182 phy_set_asym_pause(cpsw->slaves[slave_no].phy,
1183 priv->rx_pause, priv->tx_pause);
1188 static int cpsw_set_channels(struct net_device *ndev,
1189 struct ethtool_channels *chs)
1191 return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1194 static const struct ethtool_ops cpsw_ethtool_ops = {
1195 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1196 .get_drvinfo = cpsw_get_drvinfo,
1197 .get_msglevel = cpsw_get_msglevel,
1198 .set_msglevel = cpsw_set_msglevel,
1199 .get_link = ethtool_op_get_link,
1200 .get_ts_info = cpsw_get_ts_info,
1201 .get_coalesce = cpsw_get_coalesce,
1202 .set_coalesce = cpsw_set_coalesce,
1203 .get_sset_count = cpsw_get_sset_count,
1204 .get_strings = cpsw_get_strings,
1205 .get_ethtool_stats = cpsw_get_ethtool_stats,
1206 .get_pauseparam = cpsw_get_pauseparam,
1207 .set_pauseparam = cpsw_set_pauseparam,
1208 .get_wol = cpsw_get_wol,
1209 .set_wol = cpsw_set_wol,
1210 .get_regs_len = cpsw_get_regs_len,
1211 .get_regs = cpsw_get_regs,
1212 .begin = cpsw_ethtool_op_begin,
1213 .complete = cpsw_ethtool_op_complete,
1214 .get_channels = cpsw_get_channels,
1215 .set_channels = cpsw_set_channels,
1216 .get_link_ksettings = cpsw_get_link_ksettings,
1217 .set_link_ksettings = cpsw_set_link_ksettings,
1218 .get_eee = cpsw_get_eee,
1219 .set_eee = cpsw_set_eee,
1220 .nway_reset = cpsw_nway_reset,
1221 .get_ringparam = cpsw_get_ringparam,
1222 .set_ringparam = cpsw_set_ringparam,
1225 static int cpsw_probe_dt(struct cpsw_common *cpsw)
1227 struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
1228 struct cpsw_platform_data *data = &cpsw->data;
1229 struct device *dev = cpsw->dev;
1236 tmp_node = of_get_child_by_name(node, "ethernet-ports");
1239 data->slaves = of_get_child_count(tmp_node);
1240 if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
1241 of_node_put(tmp_node);
1245 data->active_slave = 0;
1246 data->channels = CPSW_MAX_QUEUES;
1247 data->dual_emac = true;
1248 data->bd_ram_size = CPSW_BD_RAM_SIZE;
1249 data->mac_control = 0;
1251 data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
1252 sizeof(struct cpsw_slave_data),
1254 if (!data->slave_data)
1257 /* Populate all the child nodes here...
1259 ret = devm_of_platform_populate(dev);
1260 /* We do not want to force this, as in some cases may not have child */
1262 dev_warn(dev, "Doesn't have any child node\n");
1264 for_each_child_of_node(tmp_node, port_np) {
1265 struct cpsw_slave_data *slave_data;
1266 const void *mac_addr;
1269 ret = of_property_read_u32(port_np, "reg", &port_id);
1271 dev_err(dev, "%pOF error reading port_id %d\n",
1276 if (!port_id || port_id > CPSW_SLAVE_PORTS_NUM) {
1277 dev_err(dev, "%pOF has invalid port_id %u\n",
1283 slave_data = &data->slave_data[port_id - 1];
1285 slave_data->disabled = !of_device_is_available(port_np);
1286 if (slave_data->disabled)
1289 slave_data->slave_node = port_np;
1290 slave_data->ifphy = devm_of_phy_get(dev, port_np, NULL);
1291 if (IS_ERR(slave_data->ifphy)) {
1292 ret = PTR_ERR(slave_data->ifphy);
1293 dev_err(dev, "%pOF: Error retrieving port phy: %d\n",
1298 if (of_phy_is_fixed_link(port_np)) {
1299 ret = of_phy_register_fixed_link(port_np);
1301 if (ret != -EPROBE_DEFER)
1302 dev_err(dev, "%pOF failed to register fixed-link phy: %d\n",
1306 slave_data->phy_node = of_node_get(port_np);
1308 slave_data->phy_node =
1309 of_parse_phandle(port_np, "phy-handle", 0);
1312 if (!slave_data->phy_node) {
1313 dev_err(dev, "%pOF no phy found\n", port_np);
1318 ret = of_get_phy_mode(port_np, &slave_data->phy_if);
1320 dev_err(dev, "%pOF read phy-mode err %d\n",
1325 mac_addr = of_get_mac_address(port_np);
1326 if (!IS_ERR(mac_addr)) {
1327 ether_addr_copy(slave_data->mac_addr, mac_addr);
1329 ret = ti_cm_get_macid(dev, port_id - 1,
1330 slave_data->mac_addr);
1335 if (of_property_read_u32(port_np, "ti,dual-emac-pvid",
1337 dev_err(dev, "%pOF Missing dual_emac_res_vlan in DT.\n",
1339 slave_data->dual_emac_res_vlan = port_id;
1340 dev_err(dev, "%pOF Using %d as Reserved VLAN\n",
1341 port_np, slave_data->dual_emac_res_vlan);
1343 slave_data->dual_emac_res_vlan = prop;
1347 of_node_put(tmp_node);
1351 of_node_put(port_np);
1355 static void cpsw_remove_dt(struct cpsw_common *cpsw)
1357 struct cpsw_platform_data *data = &cpsw->data;
1360 for (i = 0; i < cpsw->data.slaves; i++) {
1361 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1362 struct device_node *port_np = slave_data->phy_node;
1365 if (of_phy_is_fixed_link(port_np))
1366 of_phy_deregister_fixed_link(port_np);
1368 of_node_put(port_np);
1373 static int cpsw_create_ports(struct cpsw_common *cpsw)
1375 struct cpsw_platform_data *data = &cpsw->data;
1376 struct net_device *ndev, *napi_ndev = NULL;
1377 struct device *dev = cpsw->dev;
1378 struct cpsw_priv *priv;
1381 for (i = 0; i < cpsw->data.slaves; i++) {
1382 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1384 if (slave_data->disabled)
1387 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1391 dev_err(dev, "error allocating net_device\n");
1395 priv = netdev_priv(ndev);
1399 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1400 priv->emac_port = i + 1;
1402 if (is_valid_ether_addr(slave_data->mac_addr)) {
1403 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1404 dev_info(cpsw->dev, "Detected MACID = %pM\n",
1407 eth_random_addr(slave_data->mac_addr);
1408 dev_info(cpsw->dev, "Random MACID = %pM\n",
1411 ether_addr_copy(ndev->dev_addr, slave_data->mac_addr);
1412 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1414 cpsw->slaves[i].ndev = ndev;
1416 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1417 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL;
1419 ndev->netdev_ops = &cpsw_netdev_ops;
1420 ndev->ethtool_ops = &cpsw_ethtool_ops;
1421 SET_NETDEV_DEV(ndev, dev);
1424 /* CPSW Host port CPDMA interface is shared between
1425 * ports and there is only one TX and one RX IRQs
1426 * available for all possible TX and RX channels
1429 netif_napi_add(ndev, &cpsw->napi_rx,
1431 cpsw_rx_poll : cpsw_rx_mq_poll,
1433 netif_tx_napi_add(ndev, &cpsw->napi_tx,
1435 cpsw_tx_poll : cpsw_tx_mq_poll,
1445 static void cpsw_unregister_ports(struct cpsw_common *cpsw)
1449 for (i = 0; i < cpsw->data.slaves; i++) {
1450 if (!cpsw->slaves[i].ndev)
1453 unregister_netdev(cpsw->slaves[i].ndev);
1457 static int cpsw_register_ports(struct cpsw_common *cpsw)
1461 for (i = 0; i < cpsw->data.slaves; i++) {
1462 if (!cpsw->slaves[i].ndev)
1465 /* register the network device */
1466 ret = register_netdev(cpsw->slaves[i].ndev);
1469 "cpsw: err registering net device%d\n", i);
1470 cpsw->slaves[i].ndev = NULL;
1476 cpsw_unregister_ports(cpsw);
1480 bool cpsw_port_dev_check(const struct net_device *ndev)
1482 if (ndev->netdev_ops == &cpsw_netdev_ops) {
1483 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1485 return !cpsw->data.dual_emac;
1491 static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
1496 if (!cpsw->ale_bypass &&
1497 (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
1500 dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
1502 for (i = 0; i < cpsw->data.slaves; i++) {
1503 struct net_device *sl_ndev = cpsw->slaves[i].ndev;
1504 struct cpsw_priv *priv = netdev_priv(sl_ndev);
1506 priv->offload_fwd_mark = set_val;
1510 static int cpsw_netdevice_port_link(struct net_device *ndev,
1511 struct net_device *br_ndev)
1513 struct cpsw_priv *priv = netdev_priv(ndev);
1514 struct cpsw_common *cpsw = priv->cpsw;
1516 if (!cpsw->br_members) {
1517 cpsw->hw_bridge_dev = br_ndev;
1519 /* This is adding the port to a second bridge, this is
1522 if (cpsw->hw_bridge_dev != br_ndev)
1526 cpsw->br_members |= BIT(priv->emac_port);
1528 cpsw_port_offload_fwd_mark_update(cpsw);
1533 static void cpsw_netdevice_port_unlink(struct net_device *ndev)
1535 struct cpsw_priv *priv = netdev_priv(ndev);
1536 struct cpsw_common *cpsw = priv->cpsw;
1538 cpsw->br_members &= ~BIT(priv->emac_port);
1540 cpsw_port_offload_fwd_mark_update(cpsw);
1542 if (!cpsw->br_members)
1543 cpsw->hw_bridge_dev = NULL;
1546 /* netdev notifier */
1547 static int cpsw_netdevice_event(struct notifier_block *unused,
1548 unsigned long event, void *ptr)
1550 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
1551 struct netdev_notifier_changeupper_info *info;
1552 int ret = NOTIFY_DONE;
1554 if (!cpsw_port_dev_check(ndev))
1558 case NETDEV_CHANGEUPPER:
1561 if (netif_is_bridge_master(info->upper_dev)) {
1563 ret = cpsw_netdevice_port_link(ndev,
1566 cpsw_netdevice_port_unlink(ndev);
1573 return notifier_from_errno(ret);
1576 static struct notifier_block cpsw_netdevice_nb __read_mostly = {
1577 .notifier_call = cpsw_netdevice_event,
1580 static int cpsw_register_notifiers(struct cpsw_common *cpsw)
1584 ret = register_netdevice_notifier(&cpsw_netdevice_nb);
1586 dev_err(cpsw->dev, "can't register netdevice notifier\n");
1590 ret = cpsw_switchdev_register_notifiers(cpsw);
1592 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1597 static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
1599 cpsw_switchdev_unregister_notifiers(cpsw);
1600 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1603 static const struct devlink_ops cpsw_devlink_ops = {
1606 static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
1607 struct devlink_param_gset_ctx *ctx)
1609 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1610 struct cpsw_common *cpsw = dl_priv->cpsw;
1612 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1614 if (id != CPSW_DL_PARAM_SWITCH_MODE)
1617 ctx->val.vbool = !cpsw->data.dual_emac;
1622 static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
1623 struct devlink_param_gset_ctx *ctx)
1625 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1626 struct cpsw_common *cpsw = dl_priv->cpsw;
1627 int vlan = cpsw->data.default_vlan;
1628 bool switch_en = ctx->val.vbool;
1629 bool if_running = false;
1632 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1634 if (id != CPSW_DL_PARAM_SWITCH_MODE)
1637 if (switch_en == !cpsw->data.dual_emac)
1640 if (!switch_en && cpsw->br_members) {
1641 dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
1647 for (i = 0; i < cpsw->data.slaves; i++) {
1648 struct cpsw_slave *slave = &cpsw->slaves[i];
1649 struct net_device *sl_ndev = slave->ndev;
1651 if (!sl_ndev || !netif_running(sl_ndev))
1658 /* all ndevs are down */
1659 cpsw->data.dual_emac = !switch_en;
1660 for (i = 0; i < cpsw->data.slaves; i++) {
1661 struct cpsw_slave *slave = &cpsw->slaves[i];
1662 struct net_device *sl_ndev = slave->ndev;
1668 vlan = cpsw->data.default_vlan;
1670 vlan = slave->data->dual_emac_res_vlan;
1671 slave->port_vlan = vlan;
1677 dev_info(cpsw->dev, "Enable switch mode\n");
1679 /* enable bypass - no forwarding; all traffic goes to Host */
1680 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1682 /* clean up ALE table */
1683 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1684 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1686 cpsw_init_host_port_switch(cpsw);
1688 for (i = 0; i < cpsw->data.slaves; i++) {
1689 struct cpsw_slave *slave = &cpsw->slaves[i];
1690 struct net_device *sl_ndev = slave->ndev;
1691 struct cpsw_priv *priv;
1696 priv = netdev_priv(sl_ndev);
1697 slave->port_vlan = vlan;
1698 if (netif_running(sl_ndev))
1699 cpsw_port_add_switch_def_ale_entries(priv,
1703 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1704 cpsw->data.dual_emac = false;
1706 dev_info(cpsw->dev, "Disable switch mode\n");
1708 /* enable bypass - no forwarding; all traffic goes to Host */
1709 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1711 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1712 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1714 cpsw_init_host_port_dual_mac(cpsw);
1716 for (i = 0; i < cpsw->data.slaves; i++) {
1717 struct cpsw_slave *slave = &cpsw->slaves[i];
1718 struct net_device *sl_ndev = slave->ndev;
1719 struct cpsw_priv *priv;
1724 priv = netdev_priv(slave->ndev);
1725 slave->port_vlan = slave->data->dual_emac_res_vlan;
1726 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
1729 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1730 cpsw->data.dual_emac = true;
1738 static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
1739 struct devlink_param_gset_ctx *ctx)
1741 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1742 struct cpsw_common *cpsw = dl_priv->cpsw;
1744 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1747 case CPSW_DL_PARAM_ALE_BYPASS:
1748 ctx->val.vbool = cpsw_ale_control_get(cpsw->ale, 0, ALE_BYPASS);
1757 static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
1758 struct devlink_param_gset_ctx *ctx)
1760 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1761 struct cpsw_common *cpsw = dl_priv->cpsw;
1762 int ret = -EOPNOTSUPP;
1764 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1767 case CPSW_DL_PARAM_ALE_BYPASS:
1768 ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
1771 cpsw->ale_bypass = ctx->val.vbool;
1772 cpsw_port_offload_fwd_mark_update(cpsw);
1782 static const struct devlink_param cpsw_devlink_params[] = {
1783 DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_SWITCH_MODE,
1784 "switch_mode", DEVLINK_PARAM_TYPE_BOOL,
1785 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1786 cpsw_dl_switch_mode_get, cpsw_dl_switch_mode_set,
1788 DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
1789 "ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
1790 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1791 cpsw_dl_ale_ctrl_get, cpsw_dl_ale_ctrl_set, NULL),
1794 static int cpsw_register_devlink(struct cpsw_common *cpsw)
1796 struct device *dev = cpsw->dev;
1797 struct cpsw_devlink *dl_priv;
1800 cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv));
1804 dl_priv = devlink_priv(cpsw->devlink);
1805 dl_priv->cpsw = cpsw;
1807 ret = devlink_register(cpsw->devlink, dev);
1809 dev_err(dev, "DL reg fail ret:%d\n", ret);
1813 ret = devlink_params_register(cpsw->devlink, cpsw_devlink_params,
1814 ARRAY_SIZE(cpsw_devlink_params));
1816 dev_err(dev, "DL params reg fail ret:%d\n", ret);
1820 devlink_params_publish(cpsw->devlink);
1824 devlink_unregister(cpsw->devlink);
1826 devlink_free(cpsw->devlink);
1830 static void cpsw_unregister_devlink(struct cpsw_common *cpsw)
1832 devlink_params_unpublish(cpsw->devlink);
1833 devlink_params_unregister(cpsw->devlink, cpsw_devlink_params,
1834 ARRAY_SIZE(cpsw_devlink_params));
1835 devlink_unregister(cpsw->devlink);
1836 devlink_free(cpsw->devlink);
1839 static const struct of_device_id cpsw_of_mtable[] = {
1840 { .compatible = "ti,cpsw-switch"},
1841 { .compatible = "ti,am335x-cpsw-switch"},
1842 { .compatible = "ti,am4372-cpsw-switch"},
1843 { .compatible = "ti,dra7-cpsw-switch"},
1846 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1848 static const struct soc_device_attribute cpsw_soc_devices[] = {
1849 { .family = "AM33xx", .revision = "ES1.0"},
1853 static int cpsw_probe(struct platform_device *pdev)
1855 const struct soc_device_attribute *soc;
1856 struct device *dev = &pdev->dev;
1857 struct cpsw_common *cpsw;
1858 struct resource *ss_res;
1859 struct gpio_descs *mode;
1860 void __iomem *ss_regs;
1865 cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1869 cpsw_slave_index = cpsw_slave_index_priv;
1873 cpsw->slaves = devm_kcalloc(dev,
1874 CPSW_SLAVE_PORTS_NUM,
1875 sizeof(struct cpsw_slave),
1880 mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1882 ret = PTR_ERR(mode);
1883 dev_err(dev, "gpio request failed, ret %d\n", ret);
1887 clk = devm_clk_get(dev, "fck");
1890 dev_err(dev, "fck is not found %d\n", ret);
1893 cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1895 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1896 ss_regs = devm_ioremap_resource(dev, ss_res);
1897 if (IS_ERR(ss_regs)) {
1898 ret = PTR_ERR(ss_regs);
1901 cpsw->regs = ss_regs;
1903 irq = platform_get_irq_byname(pdev, "rx");
1906 cpsw->irqs_table[0] = irq;
1908 irq = platform_get_irq_byname(pdev, "tx");
1911 cpsw->irqs_table[1] = irq;
1913 irq = platform_get_irq_byname(pdev, "misc");
1916 cpsw->misc_irq = irq;
1918 platform_set_drvdata(pdev, cpsw);
1919 /* This may be required here for child devices. */
1920 pm_runtime_enable(dev);
1922 /* Need to enable clocks with runtime PM api to access module
1925 ret = pm_runtime_get_sync(dev);
1927 pm_runtime_put_noidle(dev);
1928 pm_runtime_disable(dev);
1932 ret = cpsw_probe_dt(cpsw);
1936 soc = soc_device_match(cpsw_soc_devices);
1938 cpsw->quirk_irq = true;
1940 cpsw->rx_packet_max = rx_packet_max;
1941 cpsw->descs_pool_size = descs_pool_size;
1942 eth_random_addr(cpsw->base_mac);
1944 ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1945 (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
1950 cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
1951 ss_regs + CPSW1_WR_OFFSET :
1952 ss_regs + CPSW2_WR_OFFSET;
1954 ch = cpsw->quirk_irq ? 0 : 7;
1955 cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1956 if (IS_ERR(cpsw->txv[0].ch)) {
1957 dev_err(dev, "error initializing tx dma channel\n");
1958 ret = PTR_ERR(cpsw->txv[0].ch);
1962 cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1963 if (IS_ERR(cpsw->rxv[0].ch)) {
1964 dev_err(dev, "error initializing rx dma channel\n");
1965 ret = PTR_ERR(cpsw->rxv[0].ch);
1968 cpsw_split_res(cpsw);
1971 ret = cpsw_create_ports(cpsw);
1973 goto clean_unregister_netdev;
1975 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1976 * MISC IRQs which are always kept disabled with this driver so
1977 * we will not request them.
1979 * If anyone wants to implement support for those, make sure to
1980 * first request and append them to irqs_table array.
1983 ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1984 0, dev_name(dev), cpsw);
1986 dev_err(dev, "error attaching irq (%d)\n", ret);
1987 goto clean_unregister_netdev;
1990 ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1991 0, dev_name(dev), cpsw);
1993 dev_err(dev, "error attaching irq (%d)\n", ret);
1994 goto clean_unregister_netdev;
2000 ret = devm_request_irq(dev, cpsw->misc_irq, cpsw_misc_interrupt,
2001 0, dev_name(&pdev->dev), cpsw);
2003 dev_err(dev, "error attaching misc irq (%d)\n", ret);
2004 goto clean_unregister_netdev;
2007 /* Enable misc CPTS evnt_pend IRQ */
2008 cpts_set_irqpoll(cpsw->cpts, false);
2009 writel(0x10, &cpsw->wr_regs->misc_en);
2012 ret = cpsw_register_notifiers(cpsw);
2014 goto clean_unregister_netdev;
2016 ret = cpsw_register_devlink(cpsw);
2018 goto clean_unregister_notifiers;
2020 ret = cpsw_register_ports(cpsw);
2022 goto clean_unregister_notifiers;
2024 dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
2025 &ss_res->start, descs_pool_size,
2026 cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
2027 CPSW_MINOR_VERSION(cpsw->version),
2028 CPSW_RTL_VERSION(cpsw->version));
2030 pm_runtime_put(dev);
2034 clean_unregister_notifiers:
2035 cpsw_unregister_notifiers(cpsw);
2036 clean_unregister_netdev:
2037 cpsw_unregister_ports(cpsw);
2039 cpts_release(cpsw->cpts);
2040 cpdma_ctlr_destroy(cpsw->dma);
2042 cpsw_remove_dt(cpsw);
2043 pm_runtime_put_sync(dev);
2044 pm_runtime_disable(dev);
2048 static int cpsw_remove(struct platform_device *pdev)
2050 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
2053 ret = pm_runtime_get_sync(&pdev->dev);
2055 pm_runtime_put_noidle(&pdev->dev);
2059 cpsw_unregister_notifiers(cpsw);
2060 cpsw_unregister_devlink(cpsw);
2061 cpsw_unregister_ports(cpsw);
2063 cpts_release(cpsw->cpts);
2064 cpdma_ctlr_destroy(cpsw->dma);
2065 cpsw_remove_dt(cpsw);
2066 pm_runtime_put_sync(&pdev->dev);
2067 pm_runtime_disable(&pdev->dev);
2071 static int __maybe_unused cpsw_suspend(struct device *dev)
2073 struct cpsw_common *cpsw = dev_get_drvdata(dev);
2078 for (i = 0; i < cpsw->data.slaves; i++) {
2079 struct net_device *ndev = cpsw->slaves[i].ndev;
2081 if (!(ndev && netif_running(ndev)))
2084 cpsw_ndo_stop(ndev);
2089 /* Select sleep pin state */
2090 pinctrl_pm_select_sleep_state(dev);
2095 static int __maybe_unused cpsw_resume(struct device *dev)
2097 struct cpsw_common *cpsw = dev_get_drvdata(dev);
2100 /* Select default pin state */
2101 pinctrl_pm_select_default_state(dev);
2103 /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
2106 for (i = 0; i < cpsw->data.slaves; i++) {
2107 struct net_device *ndev = cpsw->slaves[i].ndev;
2109 if (!(ndev && netif_running(ndev)))
2112 cpsw_ndo_open(ndev);
2120 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2122 static struct platform_driver cpsw_driver = {
2124 .name = "cpsw-switch",
2126 .of_match_table = cpsw_of_mtable,
2128 .probe = cpsw_probe,
2129 .remove = cpsw_remove,
2132 module_platform_driver(cpsw_driver);
2134 MODULE_LICENSE("GPL");
2135 MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");